Cargo door lock



FIG. 1 is front elevation view of a cargo door lock showing my new design;

FIG. 2 is a left side view thereof, the right side view being a mirror image thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for a cargo door lock, as shown and described. 